NAD as a building block in natural product biosynthesis

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• Dr Takayoshi Awakawa, University of Tokyo
• Tuesday 25 October 2022, 16:00-17:00
• Wolfson Lecture Theatre.

If you have a question about this talk, please contact Dr Finian J. Leeper.

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β-Nicotinamide adenine dinucleotide (β-NAD) is a pivotal metabolite for all living organisms and functions as a diffusible electron acceptor and carrier in the catabolic arms of metabolism1,2. Furthermore, β-NAD is involved in diverse epigenetic, immunological and stress-associated processes, where it is known to be sacrificially utilized as an ADP -ribosyl donor for protein and DNA modifications, or the generation of cell-signalling molecules3,4. Here we report the function of β-NAD in secondary metabolite biosynthetic pathways, in which the nicotinamide dinucleotide framework is heavily decorated and serves as a building block for the assembly of a novel class of natural products. The gatekeeping enzyme of the discovered pathway (SbzP) catalyses a pyridoxal phosphate-dependent [3+2]-annulation reaction between β-NAD and S-adenosylmethionine, generating a 6-azatetrahydroindane scaffold. Members of this novel family of β-NAD-tailoring enzymes are widely distributed in the bacterial kingdom and are encoded in diverse biosynthetic gene clusters.

This talk is part of the Biological RIG series.

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